The red exclamation marks appear above a note when the envelope's messed up. (The crossfade overlap between notes)
There's a bunch of things you can do actually.
1) It can be an error in the OTO.ini of your utau. Editing the OTO a bit may make the marks (FOR THAT NOTE) go away permanently.
SOOOO I came up with this hopefully original idea, let's do an UTAU Raffle.
What is it?
Let me explain.
To enter a raffle you do a certain thing (mostly reshare stuff or follow someone, but this can be different at times) and finally out of all people, a few will be chosen randomly by the...
It's infact not "bad" to do so, but you could try to voiceact for a new voicebank if you dislike the original too much.
I use the g Flag myself alot as well. It gives a nice effect to the more creepier songs :creepy: